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Improving Flood Control in San Mateo County’s Areas of Responsibility
James C. Porter, Director of Public Works
San Mateo County Flood Control District Areas of Responsibility and Funding
• San Mateo County Flood Control District (SMCFCD) created in 1959 (Cal. Water Code Appendix, Chapter 87)
• SMCFCD encompasses entire County area • Funding available in three subzones:
– Colma Creek, approx. $2.5M to $3M per year – San Bruno Creek, approx. $200,000 to $250,000 per year – San Francisquito Creek, approx. $250,000 to $300,000 per year
• Funding derived from a portion of the 1% property tax that was in place in 1978 when Prop 13 passed
• Funding structure similar to majority of other Bay Area county flood control districts
• No funding available outside of subzones
San Mateo County Flood Control District Areas of Responsibility
Identified Areas with Flooding Issues Outside of Three Subzones
• Bayfront Canal (North Fair Oaks, Atherton, Redwood City) • Belmont Creek (Harbor Industrial Area, Belmont, San Carlos) • Coyote Point (City of San Mateo) • Navigable Slough (San Bruno, South San Francisco) • Vista Grande Canal (Broadmoor Village, Daly City) • Butano/Pescadero Creek Watershed (Pescadero) • Ancillary Issue - Expanded Creek Flow Monitors
Expanded San Mateo County Flood Control District – Areas Identified for Work
Belmont Creek at 101 – January 19, 2016
The Proposal • Request $200,000 in FY 15/16 and $2M per FY over next three FYs • Retain Program Manager and Technical Support Staff – Two
Positions Total • Work on Projects that benefit unincorporated County areas and
assets with willing partners • Aggressively pursue grant funds • Provide greater presence for San Mateo County in Federal, State,
and Regional Issues • Support C/CAG’s Water Committee
San Francisquito Creek area floodplains and projects
East Palo Alto
Palo Alto
Menlo Park
Mt. View
= Creek floodplain only (3,500 parcels) = Bay floodplain only with 3’ Sea Level Rise (over 2,700 parcels) = Overlap of creek and Bay floodplains (2,200 parcels)
Approximate number of parcels in the 100-year floodplains
X X
USGS flow gauge (45 mins to Pope-Chaucer)
West Bayshore depth gauge
Tide gauge Pope-Chaucer depth gauge Improving the flood
warning system
New Rain gauges (3:15 to P-C)
Stanford flow gauges (1:45 to P-C)
sfcjpa.org/floodwarning
What Happens at the End of Year 3?
• Assess progress made to date on enhanced flood control
• Assess available funding sources • Determine whether support exists to continue work • Assess options for new agency independent of County
Thank You!
Questions?